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    <h2 class="title">第三周20200928到20201011日读书汇总</h2>
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      <h3 id="31-到-37-总结">3.1 到 3.7 总结</h3>
<p>1、 x86 与 x64 的发展历程
2、摩尔定律（Moore 定律）</p>
<p>摩尔定律是英特尔创始人之一戈登·摩尔的经验之谈，其核心内容为：集成电路上可以容纳的晶体管数目在大约每经过 24 个月便会增加一倍。换言之，处理器的性能每隔两年翻一倍。</p>
<p>被称为计算机第一定律的摩尔定律是指 IC 上可容纳的晶体管数目，约每隔 24 个月便会增加一倍，性能也将提升一倍。摩尔定律是由英特尔(lnte)名誉董事长戈登·摩尔( Gordon moore)经过长期观察总结的经验。</p>
<p>归纳起来，“摩尔定律”主要有以下 3 种“版本”：</p>
<ul>
<li>集成电路芯片上所集成的电路的数目，每隔 18 个月就翻一番；</li>
<li>微处理器的性能每隔 18 个月提高一倍，而价格下降一半；</li>
<li>用一美元所能买到的计算机性能，每隔 18 个月翻两番。</li>
</ul>
<p>3、数据格式
数位扩展：16 位（字 word）-&gt;32 位（双字 double words）-&gt;64 位（四字 quad words）
4、数据传输指令
mov 类：movb、movw、movl 和 movq
5、条件码
CF:进位标志
ZF:零标志
SF:符号标志
OF:溢出标志</p>

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      <time datetime=2020-10-11T20:16:21&#43;0800 class="date">Sunday, October 11, 2020</time>
      
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